Extraction of rare earth elements from the Nd-Fe-B magnet scraps through the chlorination with NH4Cl was performed to study the effective process for reusing metal iron as well as rare earths. The Nd2Fe_(14)B primary phase was selectively converted to neodymium chloride in the yield of ca. 90%, together with α-Fe and Fe-B residue on the basis of the higher chlorine affinity of rare earths.
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